Split handlebar for a bicycle

ABSTRACT

A split handlebar assembly for an aerodynamic bicycle having a handlebar stem for attaching said split handlebar assembly, comprising a right handlebar and a left handlebar; the right handlebar having a mounting section at one end, and a right grip section at the other end; the left handlebar having a mounting section at one end, and a left grip section at the other end; the right handlebar mounting section being configured to engage with the left handlebar mounting section; and the engaged mounting sections being configured to secure the right handlebar and the left handlebar to the handlebar stem.

FIELD OF THE INVENTION

The present invention relates to bicycles and more particularly, to asplit handlebar suitable for a bicycle.

BACKGROUND OF THE INVENTION

In the art, aerodynamically designed bicycles are commonplace attriathlon events. Triathlons are held on every continent throughout theyear. As triathlons continue to grow in popularity both professionalathletes and non-professional athletes, commonly referred to as agegroup athletes or “age groupers” are travelling, often by air, to racein events. As most athletes prefer having their own race gear, bikes aretransported to these race venues. Packing a bike for transport ofteninvolves at least partial disassembly of the bike including thehandlebar and aerobar assembly due to size and/or shape of the handlebarcomponents. Upon arrival, the bike and components must be reassembled.The disassembly and reassembly is often non-trivial and often on-sitebike mechanical support may be required. For the average age grouperthis becomes a stressor and additional time consuming pre-race activity.

Accordingly, there remains a need for improvements in the art.

BRIEF SUMMARY OF THE INVENTION

The present invention is directed to a split handlebar suitable for usewith an aerodynamic bicycle or aero bike.

According to one aspect, the present invention comprises a splithandlebar assembly for an aerodynamic bicycle having a handlebar stemfor attaching said split handlebar assembly, comprising a righthandlebar and a left handlebar; the right handlebar having a mountingsection at one end, and a right grip section at the other end; the lefthandlebar having a mounting section at one end, and a left grip sectionat the other end; the right handlebar mounting section being configuredto engage with the left handlebar mounting section; and the engagedmounting sections being configured to secure the right handlebar and theleft handlebar to the handlebar stem.

According to another aspect, the present invention comprises a bicycleframe comprising: a fork assembly; a bottom bracket; a top tube, a headtube, and a down tube; one end of the top tube and one end of the downtube being affixed to the head tube, and another end of the top tubebeing affixed to a seat tube; first and second chain stays, and one endof each of the chain stays being affixed to the bottom bracket; the forkassembly being operatively coupled to the head tube; and a splithandlebar assembly comprising, a right handlebar and a left handlebar;the right handlebar having a mounting section at one end, and a rightgrip section at the other end; the left handlebar having a mountingsection at one end, and a left grip section at the other end; the righthandlebar mounting section being configured to engage with the lefthandlebar mounting section; and the engaged mounting sections beingconfigured to secure the right handlebar and the left handlebar to thehandle bar stem to form a handlebar assembly.

Other aspects and features of the present invention will become apparentto those ordinarily skilled in the art upon review of the followingdescription of embodiments of the invention in conjunction with theaccompanying figures.

BRIEF DESCRIPTION OF THE DRAWINGS

Reference will now be made to the accompanying drawings which show, byway of example, embodiments of the present invention, and in which:

FIG. 1 shows in diagrammatic form an aerodynamic bicycle with a splithandlebar assembly according to an embodiment of the present invention;

FIG. 2 is a view of the split handlebar assembly of FIG. 1 according toan embodiment of the present invention;

FIG. 3 is an exploded view of a fork assembly with an external steererconfiguration for the bicycle of FIG. 1;

FIG. 4A is a view of the split handlebar assembly in a “bars down”position according to an embodiment of the present invention;

FIG. 4B is a view of the split handlebar assembly in a “bars up”position according to an embodiment of the present invention;

FIG. 5 shows the right handlebar section and the left handlebar sectionof the split handlebar assembly of FIG. 2; and

FIG. 6A shows a side-view of a bicycle with the split handle barassembly in a disassembled or travel configuration for packing thebicycle for transport according to an embodiment of the presentinvention;

FIG. 6B shows a front view of the bicycle with the split handle barassembly in a disassembled or travel configuration according to anembodiment of the present invention;

FIG. 6C shows a right-side view of the bicycle with the split handle barassembly in a disassembled or take-down configuration according to anembodiment of the present invention; and

FIG. 6D shows top view of the bicycle with the split handle bar assemblyin a disassembled or travel configuration for packing the bicycle fortransport according to an embodiment of the present invention.

Like reference numerals indicate like or corresponding elements orcomponents in the drawings.

DETAILED DESCRIPTION OF THE EMBODIMENTS OF THE INVENTION

Reference is first made to FIG. 1, which shows in diagrammatic form anaerodynamic bicycle, i.e. an aero bike, with a split handlebar assemblyaccording to an embodiment of the present invention. The aerodynamicbicycle is indicated generally by reference 10 and the split handlebarassembly is indicated generally by reference 100.

As shown in FIG. 1, the aero bike 10 comprises a frame or frameset 20, afork assembly 30 and front 41 and rear 43 wheels. According to anexemplary embodiment, the frame 20 comprises a “beam configuration” aswill be understood by those skilled in the art. The frame 20 comprises atop tube 22, a bottom tube 24, a bottom bracket 25, chain stays 26 (onlythe right chain stay being shown in FIG. 1). According to an exemplaryembodiment, the frame 20 comprises an external steerer configurationwith a head tube 32 for coupling the fork assembly 30 to the frame 20,and separate steerer tube 34 in the fork assembly for mounting anaerobar assembly, indicated generally by reference 200, above the splithandlebar assembly 100.

As shown in FIG. 3, the fork assembly 30 includes a fork steerer 33,which is configured to fit inside the head tube 32 and couple the forkassembly 30 to the frame 20 in a steerable configuration. As shown, thefork assembly 30 also includes an external steerer indicated byreference 34. The fork steerer 33 (and upper headset 36 a and lowerheadset 36 b bearings) and the external steerer 34 are coupled orattached to the frame 20 by a stem plate indicated by reference 40. Thefork steerer 33 and headset bearings 36 a and 36 b are secured to thehead tube 32 and frame 20 by a stem cap 37 and a stem cap bolt 38, inknown manner.

Referring back to FIG. 1, the top tube 22 includes a seat post section28 and adjustable seat post 27 for mounting a saddle indicated byreference 29. According to another aspect, the front 41 and 43 wheelscomprise aerodynamic wheels with a deep flange or full discconfiguration. The specific implementation and/or assembly details andadditional components required for setting up the bicycle 10 and/orframeset 20 will be readily apparent to those skilled in the art.

Reference is next to made to FIGS. 2 and 5, which shows the splithandlebar assembly 100 according an embodiment of the present inventionin more detail. The split handlebar assembly 100 comprises a righthandlebar section indicated by reference 110 and a left handlebarsection indicated by reference 120. The right handlebar section 110includes a right hand grip 112 formed or attached to one end of thehandlebar section 110 as shown. The right handlebar section 110 alsoincludes a mounting section or plate at the other end and indicatedgenerally by reference 114. According to an exemplary implementation,the mounting section 114 includes first 115 a, second 115 b and third115 c mounting holes. Similarly, the left handle section 120 includes aleft hand grip 122 formed or attached to one end of the left handlebarsection 120 as shown. The left handlebar section 120 also includes amounting section or plate at the other end and indicated generally byreference 124. According to an exemplary implementation, the leftmounting section 124 includes first 125 a, second 125 b and third 125 cmounting holes.

Referring still to FIGS. 2 and 5, the right mounting section or plate114 includes an overlapping section indicated generally by reference116. Similarly, the left mounting section or plate 124 includes anoverlapping section indicated by reference 126. According to anembodiment as shown in FIG. 2, the right handlebar section 110 ismounted directly on the stem plate 40. The left handlebar section 120 isthen mounted on top of the right handlebar section 110 as shown in FIG.2 and also in FIG. 4A. The handlebar sections 110 and 120 are held inplace by a base plate cover indicated generally by reference 42 andsecurely attached to the fork assembly 30 (i.e. the external steerer 34)by mechanical fasteners 44, e.g. M5 hex cap screws, indicatedindividually by references 44 a, 44 b, 44 c and 44 d. The M5 screws passthrough the respective mounting holes 125 (FIG. 5), indicatedindividually by references 125 a, 125 b, 125 c and 125 d, in the lefthandlebar section 120 and the respective mounting holes 115 (FIG. 5) inthe right handlebar section 110 and are securely tightened intorespective threaded sockets or holes 41, indicated individually byreferences 41 a, 41 b, 41 c and 41 d, in the stem plate 40. Theconfiguration depicted in FIGS. 2 and 4A comprises a “bars down”position with the right 110 and left 120 handlebar sections oriented ina downward direction as shown and indicated by arrows 43.

According to embodiment, the mounting section or plate 114 for the righthandlebar 110 and the mounting section or plate 124 for the lefthandlebar 120 are configured to overlap to improve the structuralintegrity or strength of the assembled split handlebar assembly 100.According to an exemplary implementation, one or more of the mountingholes 115 a and/or 115 c in the mounting plate 114 are configured toalign with one or more of the mounting holes 125 and/or 125 c in themounting plate 124 of the left hand handlebar when the respectivehandlebar sections 110 and 120 are stacked for assembly on the stemplate 40 (FIG. 2), for example, as depicted in FIGS. 4B and 5. It willbe appreciated that the overlap of the mounting plates 114 and 124 andthe installation/tightening of the base plate cover 42 with the boltfasteners 44 a, 44 b, 44 c and 44 d into the stem plate 40 provides astructural sandwich or layer configuration which improves the structuralintegrity of the handlebar assembly 100.

According to another embodiment, the right 110 and left 120 handlebarsections are also configurable in a “bars up” position as shown in FIG.4B. In the bars up configuration, the left handlebar section 120 isflipped over and mounted first directly on the stem plate 40 as shown inFIG. 4B. The right handlebar section 110 is also flipped over andmounted on top of the left handlebar section 120 as also shown in FIG.4B. The left 120 and right 110 handlebar sections are then secured tothe stem plate 40 with the base plate 42 and the fasteners 44 tightenedinto the corresponding screw sockets 41, indicated individually byreferences 41 a, 41 d (as visible in FIG. 4B), on the stem plate 40 in amanner similar to that described above. In the bars up position, theleft handlebar section 120 provides the right side grip indicated byreference 121 and the right handlebar section 110 provides the left sidegrip indicated by reference 111. It will be appreciated that the brakecontrol cables and/or shifter control cables may also need to bere-routed and/or re-connected to maintain consistency of the controls inthe cockpit formed by the handlebar assembly 100.

Referring to FIG. 2, the mounting section 124 of the left handlebarsection 120 overlaps the mounting section 114 of the right handlebarsection 110 in the section or area indicated by reference 118. Thisoverlap provides a stronger structural connection between the handlebarsections 110 and 120 and the stem plate 40. Similarly, in the “bars up”position shown in FIG. 4B, the mounting section 114 of the righthandlebar section 110 overlaps the mounting section of the lefthandlebar section 120 in the section or area indicated by reference 119.This overlap provides a stronger structural connection between thehandlebar sections 110 and 120 and the stem plate 40, for example, towithstand downward pressure or forces applied by the rider to the right112 and/or left 122 grips. The structural connection may be furtherstrengthened with the overlapping mounting sections 114 and 124, asdescribed above.

As also shown in FIG. 2, the right handlebar section 110 includes aconduit or internal tube 111 for routing bicycle component cables, forexample, a rear brake cable and/or derailleur shifters, indicatedgenerally by reference 113. Similarly, the left handlebar section 120includes a conduit or internal tube 121 for routing bicycle componentcables accessible at the left grip 122, for example, a front brake cableand/or derailleur shifters, indicated by reference 123, which arecoupled to a brake lever and shifter buttons, respectively, mounted onthe left grip 122.

According to another aspect, the right handlebar section 110 and/or theleft handlebar section 120 can be disengaged from the stem plate 40 forpacking the bicycle 20 in a bike travel case. The fasteners 44 areunscrewed and the base plate 42 is removed. The right handlebar 110 andthe left handlebar 120 sections are allowed to hang vertically with thecables remaining connected, for example, as shown in FIGS. 6A to 6D.

It will be appreciated that the capability to disengage the right 110and left 120 handlebar sections for packing and/or shipping isparticularly advantageous for a bike setup comprising hydraulic brakingsystems with hydraulic fluid filled cables that are not particularlywell suited to be disconnected and reconnected, and/or cables that arenot easily routed or reconnected.

The present invention may be embodied in other specific forms withoutdeparting from the spirit or essential characteristics thereof. Certainadaptations and modifications of the invention will be obvious to thoseskilled in the art. Therefore, the presently discussed embodiments areconsidered to be illustrative and not restrictive, the scope of theinvention being indicated by the appended claims rather than theforegoing description, and all changes which come within the meaning andrange of equivalency of the claims are therefore intended to be embracedtherein.

What is claimed is:
 1. A split handlebar assembly for an aerodynamic bicycle, comprising: a right handlebar and a left handlebar; said right handlebar having a mounting section at one end, and a right grip section at the other end; said left handlebar having a mounting section at one end, and a left grip section at the other end; said right handlebar mounting section being configured to engage with said left handlebar mounting section to form a half lap splice joint; and said engaged mounting sections being configured to secure said right handlebar to said left handlebar.
 2. The split handlebar assembly as claimed in claim 1, wherein said mounting section for said right handlebar comprises a mounting plate having one or more mounting holes, and said mounting section for said left handlebar comprises a mounting plate having one or more mounting holes, and said mounting holes being configured to align with mounting sockets in a stem plate secured to a handlebar stem.
 3. The split handlebar assembly as claimed in claim 2, wherein one or more of said mounting holes in said right handlebar are configured to align with one or more of said mounting holes in said left handlebar when positioned in a mounting position on the stem plate.
 4. The split handlebar assembly as claimed in claim 3, further comprising a base plate cover configured to secure the left handlebar and right handlebar to the handlebar stem.
 5. The split handlebar assembly as claimed in claim 1, wherein said right handlebar includes a conduit for running a bicycle component cable, and said left handlebar includes a conduit for running a bicycle component cable, and said cables are configured to keep said right handlebar and said left handlebar attached to the bicycle when detached from the handlebar stem.
 6. The split handlebar assembly as claimed in claim 1, wherein said right handlebar is configured to be mounted to the handlebar stem in a flipped over position, and said left handlebar is configured to be mounted to the handlebar stem in a flipped over position, and in said flipped over position, said right handlebar and said left handlebar forming a bars up setup.
 7. The split handlebar assembly as claimed in claim 6, wherein said mounting section for said right handlebar comprises a mounting plate having one or more mounting holes, and said mounting section for said left handlebar comprises a mounting plate having one or more mounting holes, and said mounting holes being configured to align with mounting sockets in a stem plate secured to the handlebar stem with a base plate cover.
 8. The split handlebar assembly as claimed in claim 7, wherein one or more of said mounting holes in said right handlebar are configured to align with one or more of said mounting holes in said left handlebar when positioned in a mounting position on the stem plate, so that said mounting section of said right handlebar overlaps at least a portion of said mounting section of said left handlebar.
 9. A bicycle frame comprising: a fork assembly; a bottom bracket; a top tube, a head tube, and a down tube; one end of the top tube and one end of the down tube being affixed to the head tube, and another end of the top tube being affixed to a seat tube; first and second chain stays, and one end of each of the chain stays being affixed to the bottom bracket; and a split handlebar assembly comprising: a right handlebar and a left handlebar; said right handlebar having a mounting section at one end; said left handlebar having a mounting section at one end; said right handlebar mounting section being configured to overlap and engage with said left handlebar mounting section to form a half lap splice joint; and said engaged mounting sections being configured to secure said right handlebar to said left handlebar to form a handlebar assembly operatively attachable to the fork assembly.
 10. The bicycle frame as claimed in claim 9, wherein said mounting section for said right handlebar comprises a mounting plate having one or more mounting holes, and said mounting section for said left handlebar comprises a mounting plate having one or more mounting holes, and said mounting holes being configured to align with mounting sockets in a stem plate.
 11. The bicycle frame as claimed in claim 10, wherein one or more of said mounting holes in said right handlebar are configured to align with one or more of said mounting holes in said left handlebar when positioned in a mounting position on the stem plate.
 12. The bicycle frame as claimed in claim 9, wherein said right handlebar is configured to be mounted to a handlebar stem in a flipped over position, and said left handlebar is configured to be mounted to the handlebar stem in a flipped over position, and in said flipped over position, said right handlebar and said left handlebar forming a bars up setup.
 13. The bicycle frame as claimed in claim 12, wherein said mounting section for said right handlebar comprises a mounting plate having one or more mounting holes, and said mounting section for said left handlebar comprises a mounting plate having one or more mounting holes, and said mounting holes being configured to align with mounting sockets in a stem plate secured to the handlebar stem with a base plate cover.
 14. The bicycle frame as claimed in claim 13, wherein one or more of said mounting holes in said right handlebar are configured to align with one or more of said mounting holes in said left handlebar when positioned in a mounting position on the stem plate, so that said mounting section of said right handlebar overlaps at least a portion of said mounting section of said left handlebar.
 15. The bicycle frame as claimed in claim 9, wherein said right handlebar includes a conduit for running a bicycle component cable, and said left handlebar includes a conduit for running a bicycle component cable, and said cables are configured to keep said right handlebar and said left handlebar attached to the bicycle when detached from the handlebar stem.
 16. A split handlebar assembly for an aerodynamic bicycle, comprising: a right handlebar having a mounting section at one end; and a left handlebar having a mounting section at one end; wherein an overlapping section of the right handlebar mounting section is configured to overlap and engage with an overlapping section of the left handlebar mounting section to form a half lap splice joint.
 17. The split handlebar assembly of claim 16, further comprising a stem plate, and wherein the mounting sections are further configured to secure the right handlebar and the left handlebar to the stem plate.
 18. The split handlebar assembly of claim 17, wherein the right handlebar and the left handlebar are configurable in either a “bars down” or a “bars up” position, wherein the right handlebar and the left handlebar are both flipped over in the “bars up” position, relative to the “bars down” position.
 19. The split handlebar assembly of claim 17, wherein the right handlebar includes a conduit for running a bicycle component cable, and the left handlebar includes a conduit for running a bicycle component cable, and the cables are configured to keep the right handlebar and the left handlebar attached to the bicycle when detached from the stem plate.
 20. The split handlebar assembly of claim 16, wherein the mounting sections include mounting holes configured to receive mechanical fasteners that pass through the respective mounting holes of both mounting sections. 